Brachysomus (Hippomias)

Yunakov, Nikolai, 2022, A review of the genus Brachysomus Schoenherr (Coleoptera: Curculionidae: Entiminae), Zootaxa 5193 (1), pp. 1-165 : 18-19

Hippomias : B. ponticus group

1. Elytra covered with lanceolate scales occasionally with bidentate apical margin.................................... 2

- Elytra covered with ovate, broad-ovate or round scales with bidentate or multidentate apical margin.................... 3

2. Elytral interstriae with rows of narrow, long, suberect setae as long as interstrial width. Transverse depression separating epifrons from vertex very weak.......................................................... B. boroveci Yunakov

- Elytral interstriae with rows of spatulate, short, suberect setae, shorter than interstrial width. Transverse depression separating epifrons from vertex distinct............................................................ B. simulans Yunakov

3. Fore tibiae in male strongly curved. Lateral margins of vertex convex, forming ridge-shaped structure above eyes........................................................................................... B. curvimanus Yunakov

- Fore tibiae in male straight. Lateral margins of vertex flat, not forming ridge-shaped structure above eyes............... 4

4. Eyes weakly convex. Epifrons flat............................................................ B. oertzeni Faust

- Eyes strongly convex. Epifrons longitudinally convex........................................................ 5

5. Internal margin of hind tibiae in male, blade-sharpened........................................ B. armatus Yunakov

- Internal margin of hind tibiae in male, not blade-sharpened.................................................... 6

6. Base of 10th male elytral interval strongly depressed. Internal sac with narrow spiculate field..................................................................................................... B. samos Yunakov & Germann

- Base of 10th male elytral interval flat. Internal sac with wide spiculate field....................................... 7

7. Pronotum densely covered with V-shaped scales, elytra fully covered with broad-ovate scales. Body with degraded brownspotty scale pattern...................................................................... B. assingi Yunakov

- Both pronotum and elytra fully covered with broad-ovate scales. Coloration of scale vestiture monochrome, without spotty pattern.............................................................................................. 8

8. Scales overlapping. Elytral interstriae with one row of thin, short setae, 1/2 as long as interstrial width; epifrons with median longitudinal sulcus; apex of median lobe rounded........................................... B. commutatus Košťál

- Scales not overlapping. Elytral interstriae with one row of thin, long setae, as long as interstrial width; epifrons without median longitudinal sulcus; apex of median lobe acute............................................. B. ponticus Apfelbeck